mark V "I" work station does not see in stage link c-processor

Hi All,
While trying to build a backup "I" workstation, when testing communications, the "I" will not communicate to the Mark V's C-Processor. The workstation is a duplicate of the working "I" workstation. All settings and configurations are the same and match. Motherboard, ISA ArcNet card are the same. The ArcNet card is set to IRQ #11 as in the working "I" workstation.
I use the command arcwho to check the communication link but the workstation is still doesn't see the stage link

The arcnet address is set to 1F for the first <IDP> on the stage link

configure for network interface arcnet controller card are
controller 90c198
IRQ 11
IO_BASE D000
MEMORY SIZE 4K
DIAGNOSTIC OFF


Any help on what I am missing would be appreciated.
thanks very much
Tim
 
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